By Marc J. de Vries, Marc J. Vries
In view that international struggle I, the Natuurkundig Laboratorium has been a vital middle of business examine for Philips, one of many world’s greatest electronics businesses. during this learn, Marc J. de Vries demonstrates how the heritage of the laboratory may also help us comprehend very important adjustments within the creation and makes use of of know-how within the 20th century. Breaking their examine into 3 classes, every one characterised through diversified study pursuits and techniques, the authors increase this normal background with distinct case reviews. the outcome should be of price to a person learning the background and philosophy of expertise.
Read or Download 80 Years of Research at the Philips Natuurkundig Laboratorium (1914-1994): The Role of the Nat. Lab. at Philips PDF
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Additional resources for 80 Years of Research at the Philips Natuurkundig Laboratorium (1914-1994): The Role of the Nat. Lab. at Philips
This eliminates most of the problems of tracking tuneable circuits and allows band-pass circuits to be used (from Garratt 1976, Vol. 2, p. 85). Lab. was active in supporting the technological realisation of the company’s decision. ’s research programme. An important step forward was to be found in the chromium-iron melting technique, developed in 1923 by Holst and Bouwers. The story goes that they made this discovery by accident, after they had heard glass blowers complaining about the chromium-iron alloys (of which the glass blower’s pipes were made).
Lab. These wires had better mechanical properties than polycrystalline wires. Another material that was of interest, from the original light bulb perspective, was glass. During WWI Philips had opened a glass factory of its own. Lab did not do much research on this. Perhaps a second reason was that the analytical methods of X-ray and electron diffraction were not appropriate for glass, because glass is an amorphous and not a crystalline material. M. Lab. into other materials areas, namely luminescent materials (such as phosphor).
In third place there were the radio receiver tubes. Lab. 16 In September 1922, B. Lab. to lead research in this field. Van der Pol had studied mathematics and physics and already had a good reputation. It is evident that Holst wanted him to join the staff because of his specific expertise in this area. Lab. by developing new types of receiver tubes. In particular, he endeavoured to improve on the low energy use of the tubes that RCA and Marconi produced. Initially, the work did not yield results any better than those produced by RCA and Marconi, but by concentrating much of the total research effort on this problem – according to one of Holst’s notebooks, 9 of the 16 scientists were working on this – the study into the effect of a layer of barium oxide on a tungsten wire had, by 1924, yielded a procedure for making what were known as oxide cathodes.